diff --git a/projekte/protothreads/.gitignore b/projekte/protothreads/.gitignore
index 2562945..494fc64 100644
--- a/projekte/protothreads/.gitignore
+++ b/projekte/protothreads/.gitignore
@@ -3,6 +3,7 @@
 *.hex
 *.lss
 *.map
+*.o
 *.sym
 obj/
 .dep/